this post was submitted on 29 Mar 2024
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Exactly this. And rather believe cryptographically sighed images by comparing hashes with the one supplied by the owner. Then it's rather a question of trusting a specific source for a specific kind of content. A news photo of the war in Ukraine by the BBC? Check hash on their site. Their reputation is fini if a false image has been found.
At the same time, that does introduce an additional layer of work. Most people aren't going to do that just for the extra work that it would involve, in much the same way that people today won't track down an image back down to the original source, but usually just go by the one that they saw.
Especially for people who aren't so cryptographically or technologically inclined that they know what a hash is, where to find one, and how to compare it (without just opening them both and checking personally).
Sure but that's no problem if software would do that automatically for users of big (news) sites. Browsers on desktop and apps on phones.